Improvement in soldering-iron heaters



UNITED STATES PATENT OFFICE,

JOSEPH S. BURWELL AND GEORGE POEHNER, OF JOLIET, ILLINOIS.

IMPROVEMENT IN SOLDERlNG-IRON HEATERS.

Specification forming part of Letters Patent No. 156,332, dated October27, 1874; application filed March 14, 1874.

- county and State of Illinois, have invented a Tinners Furnace, ofwhich the following is a specification Our invention consists in a novelconstruction of a tinners furnace for heating soldering-irons, for thepurpose of economising fuel and more quickly heating the irons than inthe ordinary furnace, the construction and operation of which we willproceed to explain, reference being had to the annexed drawing, making apart of this specification, which is a vertical sectional view throughthe center of the furnace.

B is the outer wall of the furnace proper, surmounted by the chamber Aand covered by'the lid. a. D is the magazine which holds the fuel, whichburns from its lower end much the same as in a base-burning stove. Themagazine D extends down below the center of the furnace proper into thefire-box F, as shown, which fire-box is constructed of perforated sheetson the bottom, two sides, and back, if desired, as shown in the figure.The irons to be heated are shoved into the firebox F through the hearth0, through which the draft is passed, as shown by the arrows, downthrough the perforations and out at the chimney c. n is an ash-pan tocatch the ashes as they fall through the perforations in the grates. sis an opening at either side of the furnace, used as a check-draft.

These openings are closed by a slide, which may be open or closed atpleasure, as the occasion may require. The chamber A is attached to thelower part by means of bolts, as shown, and may be of any size to holdmore or less fuel, as may be desired. The advantages of thisconstruction of the furnace are that by this mode the draft passessidewise through only the fuel that immediately surrounds the irons tobe heated in a downward direction, so that the draft is c011- fined tothe very place needed, thereby causing a more intense heat than when thedraft passes up through the coal from the bottom. Also, by thisconstruction no fuel is ignited except that immediately surrounding theirons to be heated, thereby causing an immense saving in fuel also,there being less fuel for the draft to pass through, a better draft isobtained'than in any ordinary furnace.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is as follows:

In a tinners furnace the combination of the magazine D, fire-pot F,perforated in its bottom and sides, the draft-inlet and iron support. 0,smoke-pipe O, and check-draft S to maintain a diving-draft through thebaseburned fuel, as and for the purposes set forth.

. J. S. BURWELL.

G. POEHNER.

Witnesses:

THOS. H. HUToHINs, J AS. M. GHRITToN.

